SAP ABAP Data Element QJNP (iSeries: Join Position (Database Monitor))
Hierarchy
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SAP_BASIS (Software Component) SAP Basis Component
⤷
BC-DB-DB4 (Application Component) DB2 for AS/400
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STU4 (Package) CCMS / AS/400
SAP_BASIS (Software Component) SAP Basis Component⤷
BC-DB-DB4 (Application Component) DB2 for AS/400⤷
STU4 (Package) CCMS / AS/400
Basic Data
| Data Element | QJNP |
| Short Description | iSeries: Join Position (Database Monitor) |
Data Type
| Category of Dictionary Type | D | Domain |
| Type of Object Referenced | No Information | |
| Domain / Name of Reference Type | QQDEC150 | |
| Data Type | DEC | Counter or amount field with comma and sign |
| Length | 15 | |
| Decimal Places | 0 | |
| Output Length | 19 | |
| Value Table |
Further Characteristics
| Search Help: Name | ||
| Search Help: Parameters | ||
| Parameter ID | ||
| Default Component name | ||
| Change document | ||
| No Input History | ||
| Basic direction is set to LTR | ||
| No BIDI Filtering |
Field Label
| Length | Field Label | |
| Short | 11 | Join Pos. |
| Medium | 21 | Join Position |
| Long | 41 | Join Position |
| Heading | 55 | Join Position |
Documentation
Definition
QQJNP is the join position of a table in the optimizer's join order for an SQL statement over multiple tables, as opposed to the relative position of the table in the original statement (see: QQJNDS).
Example
Original SQL statement:
select a.field_1
from table_1 as a, table_2 as b
where a.field_2 = b.field_2
If the optimizer reordered the join order to process table_2 first and then table_1, then table_2 has join position 1 with QQJNDS 2 and table_1 has join position 2 with QQJNDS 1.
History
| Last changed by/on | SAP | 20070813 |
| SAP Release Created in |
